Researched and checked: 11 Oct 2026
Thai Airways International and Singapore Airlines are both full-service flag carriers and Star Alliance members, based at Bangkok Suvarnabhumi and Singapore Changi. Travellers compare them mainly for Bangkok–Singapore trips and for one-stop journeys between Europe, Asia and Australia.
Singapore Airlines is the larger operator, with 87 destinations, a bigger widebody fleet and First-class Suites on some aircraft. It suits travellers who want the widest network and a premium cabin choice. Thai suits those who want a full-service fare on routes through Bangkok, with a fleet renewal and a cabin overhaul planned for 2027. Because both are in Star Alliance, miles earn and lounge access carry across either airline.
Both airlines run a single-hub model. Thai flies from Bangkok Suvarnabhumi to 51 international and 9 domestic destinations in 29 countries (January 2026), focused on Europe, Asia and Oceania. A return to North America is under discussion. Singapore Airlines serves 87 destinations from Changi (2026). It also operates ultra-long-haul A350-900ULR aircraft and has Scoot as a low-cost sister carrier.
Singapore Airlines had 164 aircraft in March 2026, including 58 A350-900s, 7 A350-900ULRs, 13 A380s and 28 787-10s. It has 31 777-9s on order, with deliveries expected from 2027. Thai had 84 aircraft at 30 June 2026 and 89 on order, including 31 A321neos and a number of 787s. TTG Asia (September 2026) reports a plan to streamline to four types, with a cabin overhaul in 2027.
Singapore Airlines varies by aircraft. The A380 has First (Suites), Business, Premium Economy and Economy. The 777-300ER has Premium Economy, Business and Economy, with a small First cabin on some aircraft. The 787-10 and 737 MAX 8 have only Business and Economy. Thai offers Royal Silk (business), Premium Economy and Economy depending on the aircraft, and Royal First appears in some baggage tables. Check the aircraft type on your flight before booking, as cabins differ.
Thai allows one cabin bag of up to 7 kg on its official page. For tickets issued from 25 November 2025 for travel from 2 March 2026, HappyFares lists a piece-based allowance. Economy Saver and Standard get 1 x 23 kg, and Royal Silk gets 2 x 32 kg. Older tickets keep the weight-based rules. Singapore Airlines allowances depend on fare and route, so check its website for your ticket.
Thai recorded 79.29% on-time arrivals in June 2025 (Cirium). Thai lounges are branded Royal Orchid and Royal Silk, and its programme is Royal Orchid Plus. Singapore Airlines has SilverKris lounges and the KrisFlyer programme, with the PPS Club for top members. Both airlines are in Star Alliance, so status with either gives reciprocal lounge access and earning across the alliance.
Singapore Airlines has the bigger network (87 destinations) and fleet (164 aircraft) and offers First (Suites) on some aircraft. Thai is a full-service alternative with a strong Bangkok hub and a cabin overhaul planned for 2027. The better choice depends on your route and cabin.
Yes. Both belong to Star Alliance. Thai is a founding member, and Singapore Airlines joined in April 2000.
For tickets issued from 25 November 2025 for travel from 2 March 2026, Economy Saver and Standard fares are reported to include 1 x 23 kg, and Royal Silk 2 x 32 kg. Older tickets keep the weight-based allowance, so check your fare on Thai's website.
Thai Airways International is the flag carrier of Thailand. According to Wikipedia, it was founded in 1960 as a joint venture with Scandinavian Airlines and began operating in its current form in 1988 after merging with Thai Airways Company. The Ministry of Finance holds 42.94% of the shares, and the airline is listed on the Stock Exchange of Thailand. Its headquarters are in Chatuchak, Bangkok. Thai is a founding member of Star Alliance. Its regional subsidiary Thai Smile was merged back into the mainline carrier from 2023.
The main hub is Bangkok Suvarnabhumi Airport. As of January 2026 the airline served 51 international and 9 domestic destinations in 29 countries, with a network focused on Europe, Asia and Oceania. A return to North America is under discussion, according to Aviation A2Z (July 2026).
Wikipedia lists a fleet of 80 aircraft as of January 2026, with a large order book (see the fleet page). In July 2026 Aviation A2Z reported a Boeing 787 fleet of 45 aircraft, including those on order. TTG Asia (25 September 2026) reports that long-haul flying will rely on the Airbus A350-900, Boeing 777-300ER and Boeing 787 family as older wide-bodies retire. It also reports that the Airbus A321neo fleet will grow from nine to 15 by the end of 2026, with a target of 32. The fleet is to be streamlined to four types, with a cabin overhaul planned for 2027.
Singapore Airlines is the flag carrier of Singapore. According to Wikipedia, its origins lie in Malayan Airways, founded on 1 May 1947, and it began operating under its current name on 1 October 1972. Temasek Holdings owns 53% of the company. The headquarters are at Airline House, Changi. The airline has belonged to Star Alliance since April 2000. Its group includes the low-cost carrier Scoot, SIA Engineering Company and Singapore Airlines Cargo, and it holds 25.1% of Air India Limited.
The sole hub is Changi Airport. The airline served 87 destinations as of 2026 (Wikipedia). It operates long-haul services using Airbus A350-900ULR aircraft, and regional routes with Boeing 737 MAX 8 aircraft, which were added after the merger with SilkAir.
As of March 2026, Wikipedia's fleet page lists 164 registered aircraft: 152 passenger aircraft and 12 freighters. The passenger fleet includes:
The airline has 31 Boeing 777-9 aircraft on order, with deliveries expected to begin in 2027. These are due to replace older A380s and 777-300ERs. Three more 787-10s are also on order.
Cabin layouts vary by aircraft. The A380-800 has First (Suites), Business, Premium Economy and Economy cabins. The 777-300ER has Premium Economy, Business and Economy cabins, and some aircraft also carry a small First cabin. The 787-10 and 737 MAX 8 have Business and Economy only, according to the same fleet table. Seat pitch, meal and entertainment details were not verified for this profile; check the official website.

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